(19)

(11)

EP 4 107 642 A1

(12)

(43) Date of publication: 28.12.2022 Bulletin 2022/52 (21) Application number: 21706143.1 (22) Date of filing: 28.01.2021

(51) International Patent Classification (IPC):  G06F 21/62(2013.01) G06F 16/176(2019.01) H04L 29/08(2006.01) (52) Cooperative Patent Classification (CPC): G06F 21/6218; G06F 21/629; G06F 2221/2141; G06F 2221/2145; G06F 2221/2147; H04W 4/08 (86) International application number: PCT/US2021/015450 (87) International publication number: WO 2021/167766 (26.08.2021 Gazette 2021/34)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 17.02.2020 US 202062977690 P 27.01.2021 US 202117159811 (71) Applicant: Slack Technologies, LLC San Francisco, California 94105 (US)	(72) Inventors: SULLIVAN, Christopher San Francisco, CA 94105 (US) GRANT, Myles San Francisco, CA 94105 (US) DEMMER, Michael San Francisco, CA 94105 (US) DELP, Shanan San Francisco, CA 94105 (US) VASAMSETTI, Sri San Francisco, CA 94105 (US) (74) Representative: Bryn-Jacobsen, Caelia et al Kilburn & Strode LLP Lacon London 84 Theobalds Road London WC1X 8NL London WC1X 8NL (GB)